WO2015117254A1 - Dispositif de tension pour dispositif de cerclage - Google Patents

Dispositif de tension pour dispositif de cerclage Download PDF

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Publication number
WO2015117254A1
WO2015117254A1 PCT/CH2015/000013 CH2015000013W WO2015117254A1 WO 2015117254 A1 WO2015117254 A1 WO 2015117254A1 CH 2015000013 W CH2015000013 W CH 2015000013W WO 2015117254 A1 WO2015117254 A1 WO 2015117254A1
Authority
WO
WIPO (PCT)
Prior art keywords
strapping
tensioning wheel
roller
band
tape
Prior art date
Application number
PCT/CH2015/000013
Other languages
German (de)
English (en)
Inventor
Hans Huber
Dimitrios Takidis
Roland Widmer
Original Assignee
Orgapack Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=52697174&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2015117254(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from CH00181/14A external-priority patent/CH709244A2/de
Priority claimed from CH00182/14A external-priority patent/CH709245A2/de
Priority claimed from CH00183/14A external-priority patent/CH709246A2/de
Application filed by Orgapack Gmbh filed Critical Orgapack Gmbh
Priority to US15/117,410 priority Critical patent/US10513358B2/en
Priority to PL15711034T priority patent/PL3105126T3/pl
Priority to EP15711034.7A priority patent/EP3105126B1/fr
Priority to US15/117,416 priority patent/US10220971B2/en
Publication of WO2015117254A1 publication Critical patent/WO2015117254A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/22—Means for controlling tension of binding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/04—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes with means for guiding the binding material around the articles prior to severing from supply
    • B65B13/06—Stationary ducts or channels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/10—Text processing
    • G06F40/166—Editing, e.g. inserting or deleting
    • G06F40/186—Templates
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • G06V30/1423—Image acquisition using hand-held instruments; Constructional details of the instruments the instrument generating sequences of position coordinates corresponding to handwriting
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/12—Synchronisation between the display unit and other units, e.g. other display units, video-disc players
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00—Aspects of interface with display user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the invention relates to a tensioning device of a strapping device for strapping of packaged goods with a strapping, in particular with a Kunststoffumreifungsband which is provided with a tensioning wheel, which is operatively connected to a drive means or operatively connected to enable the tensioning wheel in a rotational movement about an axis of rotation, said Tensioning wheel has a peripheral surface which is intended for engagement in the strapping.
  • the tensioning device can be provided both for stationary and for mobile, in particular for portable, strapping devices.
  • Such strapping devices may i.a. be designed as a stationary system that is used to provide larger packaged goods or assembled to a Packgutaji several individual packaged goods with one or more Bandumreifept.
  • the band strapping is usually formed from a strip which is withdrawn from a supply roll and placed as an annular strapping around the packaged.
  • the strapping tape is shot with its free end ahead in a channel of the strapping device, which surrounds the packaged with portal-like or annular distance.
  • the end of the tape is clamped and the tape is then withdrawn again.
  • the loop of the strapping band contracts and the band comes out of the channel in abutment against the packaged goods.
  • a band tension is applied to the band, the band ring provided with a closure and separated from the supply roll.
  • a strapping band both metallic bands and plastic bands are used.
  • the strapping devices are usually adapted to the Umreifungsbandtypen to be used with them, in particular with respect to the connecting device, with the two sections superimposed tape layers of the strapping are inextricably linked.
  • the strap's strap is usually retracted at high speed in one direction is aligned opposite to the feed direction with which the tape was previously shot into the channel.
  • the tensioning wheel of the tensioning device is usually also arranged, with which the tensioning process is carried out only subsequently. Since the tensioning wheel is usually not driven during the retraction process and thus stands still, there is a risk that during belt retraction the strapping belt is guided or pulled over the tensioning wheel. Due to the contact and the relative movement between the tensioning wheel and the strapping band, the strapping band can be damaged by the tensioning wheel.
  • the peripheral surface of the tensioning wheel is not smooth surface but provided with a geometrically determined or indefinite roughened surface, such as a ribbing, knurling or serration, as is common for improving the engagement conditions and to avoid slippage in tensioning wheels.
  • a geometrically determined or indefinite roughened surface such as a ribbing, knurling or serration
  • the tensile strength of the strapping band in the area of the damage can be reduced so that the belt breaks at the intended tensile stress.
  • Other disadvantages of such engagement can be seen in the friction-related reduction in belt retraction speed and wear caused by contact of the belt with the rough surface of the tensioning wheel during the belt retraction phase.
  • the invention is therefore based on the object to improve a strapping device for strapping of packaged goods with a strapping tape to the effect that disadvantages that occur due to the relative speed between the tensioning wheel and the band during the tape retraction phase are avoided as possible.
  • a clamping device of the aforementioned type according to the invention that in the region of the peripheral surface of the tensioning wheel at least one movable spacer element is provided on the tensioning wheel, which can be arranged in a first position and in a second position differing therefrom, wherein in the first position, the spacer element at least partially with a first distance to the axis of rotation of the tensioning wheel and in the second position with an at least partially spaced second distance to the axis of rotation of the tensioning wheel can be arranged, in this case, the first distance from second distance and the spacer protrudes in at least one of the two positions on the peripheral surface of the tensioning wheel.
  • the distance to the axis of rotation can preferably be understood to be a distance of a region of the respective spacer element from the axis of rotation, which is provided for contact with the strapping band at least in one of the two positions.
  • the invention thus enables the strapping band to be prevented from coming into abutment against the surface of the tensioning wheel by means of the at least one spacing element movable relative to the tensioning wheel when the spacing element assumes its position, in which it is at least partially over the peripheral surface the tensioning wheel survives.
  • the spacer element at least partially from the position with the greater radial distance from the axis of rotation in the other position with the smaller radial distance from the axis of rotation can be transferred.
  • “externally applicable” means in particular that the force is applied by an element not belonging to the tensioning wheel or the spacing element itself, in particular by the strapping band Since no drive of the tensioning wheel provided for this purpose is required for the generation of the position or shape change of the spacer element in such embodiments of the invention, the tensioning wheel can be structurally simple despite the realization of the inventive function.
  • a structurally simple, yet compact embodiment of the invention can provide that the spacer element is rotatably arranged together with the tensioning wheel.
  • the at least one spacer element may preferably be movable relative to the tensioning wheel itself, wherein changes in position of the at least one spacing element, in particular during a rotation of the tensioning wheel, may take place and are possible. It can preferably be provided that the at least one spacer element assumes its first position during the belt retraction phase, so that during the belt retraction phase the strapping belt is arranged against the at least one spacer element of the tensioning wheel and thus at a distance from the circumferential surface of the tensioning wheel.
  • the band is thus ideally prevented by the spacer element from being in contact with the circumferential surface of the tensioning wheel during the belt retraction phase. If such a contact can not be completely avoided, however, it should be reduced by the spacer at least as far as possible.
  • the at least one spacer can be brought with at least one of its sections in its second position in which it at the points of the peripheral surface at which the tensioning wheel is wrapped by the strapping, at most the same height is arranged with the peripheral surface or lower. As a result, the spacer element releases the peripheral surface for the desired contact with the peripheral surface during the clamping process.
  • the at least one spacer element can be arranged in different orientations with respect to the peripheral surface.
  • An orientation of the spacer element is preferably parallel to the circumferential direction of the tensioning wheel. In this way, the function of the spacer can be ensured with a particularly low design effort along the entire circumference of the tensioning wheel.
  • passive and active spacer elements may be provided to convert the at least one spacer element in its two positions.
  • active elements can be understood those whichsätig make a position and or shape change, for example, those that make self-generated by the use of hydraulic, pneumatic or by using electrical or magnetic energy position and / or shape changes of the spacer.
  • spacer elements which from the outside a position and / or shape change is imposed without the spacer itself contributes to this something.
  • a position or shape change can be done for example by a counter-roller, which exerts a compressive force in the direction of the tensioning wheel and presses the tape against the spacer element.
  • the region of the spacer element can hereby be provided at a smaller distance from the axis of rotation of the tensioning wheel than in the unloaded state. The change in distance can be used to ensure that in the area of the counter-roller, the strapping band now bears against the peripheral surface of the tensioning wheel, instead of against the spacer element.
  • Particularly favorable embodiments of the invention are in particular those in which no control of the time points is required, to which position changes of the spacer element are to be made.
  • a particularly favorable embodiment of a passive spacer element can therefore provide that the forces exerted by the band on the tensioning wheel and thus also on the spacer element are used themselves in order to make a change in position.
  • a particularly advantageous embodiment may provide that the forces of different magnitude during the belt retraction phase and the tension phase are used to determine whether a change in position and / or shape should occur. A switching operation is not required, the position and / or shape change can be done automatically and also reversed.
  • the spacer element can be designed such that the force exerted during the tape retraction phase force of the belt on the tensioning wheel is not sufficient to bring the spacer element in its second position.
  • the higher forces that the band exerts on the tensioning wheel during the tensioning process in comparison therewith are suitable by appropriately designing the spacing element in order to transfer the latter into its second position, in which contact then takes place between the strapping belt and the peripheral surface.
  • neither additional energy, nor monitoring or control of the process must be made. This results in a structurally inexpensive but nevertheless functionally reliable embodiment of the invention.
  • a particularly preferred embodiment of the invention can provide both a counter-roller pressing in the direction of the tensioning wheel and the use of the belt to produce the change in position. This can be a special functionally reliable achievement of the position and / or shape change of the spacer can be achieved. It may be advantageous if especially at the beginning of the clamping phase, the tape is pressed with a counter-roller or other suitable element against the spacer and thereby the spacer is at least in the area of the counter-roller pushed back so that the tape comes into contact with the peripheral surface , Thus, the band comes into engagement with the tensioning wheel, which can be started to increase the belt tension. As a result, the band begins to apply at least substantially predetermined wrap around the tensioning wheel according to its intended band guide to the spacer.
  • the compressive force can then also be increased to a size which is sufficient to push back the spacer element in contact with the belt in such a way that the belt is in contact with its peripheral surface via its wrap angle on the tensioning wheel.
  • the spacer element is pushed back so far that the spacer element does not project beyond the contact region of the peripheral surface with the belt over at least part of the wrap angle, preferably at least substantially over the entire wrap angle.
  • the tensioning wheel with its non-smooth peripheral surface can remain in engagement with further increasing belt tension and the belt tension can be increased up to a predetermined value.
  • the peripheral surface of the tensioning wheel can be provided with a groove at least over a partial length of the circumference, in which a ring element can be arranged as part of the spacer element, which can be arranged at least in sections in different positions.
  • the ring element can be arranged in an advantageous manner in a first position in which he at least partially against the Enlarge circumferential surface and in a second position in which the ring member at least partially not projecting with respect to the peripheral surface.
  • the spacing element such as the ring element, prevents the strapping band from coming into contact with the deliberately non-smooth surface of the tensioning wheel.
  • a particularly advantageous solution can provide that the ring element extends substantially over the entire circumference of the tensioning wheel and is arranged in a groove extending over the circumference of the tensioning wheel.
  • the ring element can be pressed in a favorable development of the invention under pressure by the strapping in the groove, so that due to this suppression of the ring member along a wrap angle, the ring element no longer protrudes from the peripheral surface and the strapping against the peripheral surface of the tensioning wheel can come into abutment ,
  • the ring element can be designed such that it is pushed back into the groove only in the described manner in the described manner with a certain force acting on the ring element minimum force. This minimum force can be predetermined in such a way that, although it is not achieved during the tensioning process during the strip withdrawal process.
  • the ring element, or other embodiments of the spacer by using spring elasticity, with a corresponding relief from the tape pressure, after a previous load, immediately and automatically reset.
  • the ring element or another embodiment of the spacer itself may be resilient.
  • at least one resilient element may be provided in addition to optionally at least substantially rigid or insufficiently elastic spacer element, such as one or more O-rings or other spring elements having a restoring to the spacer element Exercise effect.
  • these solutions also offer the avoidance of the supply of external energy.
  • a further embodiment of the clamping device is preferred in which during the clamping operation, the tensioning wheel rotates and with respect to a stationary Polar coordinate system of the tensioning wheel on the at least substantially always the same peripheral portion of the tensioning wheel, the spacer element is pressed into the groove, while the spacer member on the remaining peripheral portion against which the strapping band is not present, protrudes from the peripheral surface.
  • the aforementioned object is also achieved by a strapping device which is provided with one of the tensioning devices according to the invention.
  • a further preferred embodiment of the invention - which may also be independent of the number of used for applying movements on the belt wheels, rollers and motors as well as the design of the tensioning wheel - may provide an operable means with which at least one wheel of a Pair of wheels of the feed device is switchable to a state in which the strapping, without transfer of a corresponding motor drive movement on the strapping, in a direction opposite to the tape feed movement direction between the pair of wheels is displaceable.
  • the clamping effect can already be reduced by reducing a pressure force with which the two wheels are pressed against one another, for example by means of a variably adjustable size of this pressure force. Such a reduction of the clamping effect can already be sufficient for a strapping band to move on its own between the pair of wheels.
  • one possibility for moving the strapping band between the wheels of the pair of wheels can also be achieved by releasing an operative connection between a driven wheel and its drive, so that both wheels of the pair of wheels can rotate freely without holding torque of the drive device.
  • Such a cancellation of an operative connection can be made for example by means of a switchable clutch in the drive train of the driven wheel. With this switchable coupling, preferably, the operative connection can be restored to subsequently again apply a drive movement of the driven roller on the strapping, in particular a belt retraction movement.
  • the strap By a free rotation of the pair of wheels, or at least slip or preferably a sufficiently large gap between the wheels, it is the strap allows excess tape length of the belt loop immediately after or already break down during the emergence of the belt loop between the pair of wheels, creating a wave as possible should be avoided.
  • An incipient excess strip length in the strapping channel leads to compressions in the belt loop and thus to pressure and / or bending stresses in the strapping band.
  • Conventional strapping tapes have a flexural rigidity which tends to reduce such straps from compressing and flexing stresses by allowing them to become planar and rectilinear. This is advantageously utilized by the invention in that by creating a possibility of movement of the band between the pair of wheels, excess band length can move out of the band channel, in particular alone, between the wheels due to the band self-relaxation.
  • a ventilation device may be provided.
  • the airing device in a strapping device, can be designed for execution a L favorablevorgangs be provided between the driven roller and its counter-roller, by which a distance between the driven roller and its counter-roller is generated or enlarged and then reduced again.
  • ventilation can therefore be understood as the generation of a distance.
  • the venting process between the two roles before the effected by motor drive movement tape retraction canceled and the two roles are brought against each other again in abutment.
  • the venting process thus preferably takes place in time between the tape feed and the tape retraction process.
  • a temporal overlap between the Bandvorschub- and / or the belt retraction process on the one hand and the airing on the other hand is possible, but not required.
  • the non-motor driven counter-roller can be arranged on a rotatable eccentric.
  • the ventilation device can act on the eccentric here to produce by rotation of the eccentric eccentricity and a gap between the two rollers, which is greater than the strip thickness.
  • the eccentric After completion of the ventilation process the eccentric can be turned back in then opposite direction, whereby the two rollers again clamp the band between them and now with the two rollers can be done a tape retraction process.
  • This preferred embodiment of the invention has, inter alia, the advantage that by means of an eccentric with comparatively small space required, a rapid movement of the counter-roller for generating a distance to the driven roller and again a delivery to the driven roller is possible.
  • the distance between the two rollers for the venting process can of course also be done in other ways, for example by a pivoting movement or a linear movement of at least one of the two rollers.
  • a linearly movable driven element such as a reciprocating piston takes place.
  • a linearly movable driven element such as a reciprocating piston
  • Such lifting elements are available in many ways and with different drive principles. It can be formed with such the drive movement particularly functionally reliable ventilation. In addition, it is possible with such drive elements even with relatively little effort to retrofit existing strapping with a vent.
  • Fig. 1 is a highly schematic representation of an inventive
  • Strapping device provided with a strapping head according to the invention:
  • Fig. 2 is a perspective view of an inventive
  • a partial perspective view of the strapping head of Figure 2 with a representation of the tape drive device.
  • a front view of the tape drive device of FIG. 5 a perspective view of an inventive tensioning wheel with a partial representation of the knurling of the peripheral surface of the tensioning wheel; a front view of the tensioning wheel of Fig.
  • Fig. 17 is a sectional view of the tensioning wheel of Figs. 14-16;
  • Fig. 18 shows a further embodiment of an inventive
  • FIG. 19 the tape drive means of FIG. 18 in a representation in which a
  • Counter-roll is fanned by the co-acting driven roller.
  • a strapping device 1 is shown, which is provided with a controller 2, a storage device 3 for stocking and disposal of a strapping band, as well as with a strapping head 5.
  • the strapping head 5 is used inter alia to generate a feed and to generate a return movement of the strapping. He is also provided with a tensioning device, for applying a belt tension on a belt loop, and a closure device for producing a closure on the strapping.
  • the strapping device has a tape guide 6, with which the tape can be placed automatically and automatically on a predetermined path around a packaged goods 7.
  • a welding and clamping unit 16 is integrated into the strapping head 5. Except for the strapping head 5, these are known components of strapping devices.
  • the arranged together with the tape guide 6 on a frame 8 and shown separately in Fig. 2 strapping head 5 has a tape drive means 15.
  • Belt drive devices are generally known, which is why below essentially addresses the differences to previously known belt drive devices.
  • the tape drive device according to this embodiment can in particular with one or more pairs of rollers 1 1, 12; 13 and possibly be provided with further individual pulleys. The latter, however, take not involved in the generation of the tape movement and are intended only for the determination of the band direction.
  • three rollers 1 1, 12, 13, which generate the tape movements, at least one of the rollers 11, 12, 13 should be driven by a motor for generating a Bandvorschub- or tape retraction movement. It should preferably be driven in each case a roller 11, 12, 13 of the roller pairs formed from these roles, between which carried the strapping and thereby a feed, retraction or tensioning movement and optionally a Entspananterrorism is transmitted to the tape.
  • the strapping head 5 has two components, a control component 16 and a band handling component 17.
  • the control component 16 has, in addition to the execution of control functions for the components of the strapping device other functions, such as the generation of closures between the two band layers of a strapping as well as the separation of the strapping tape from the tape supply.
  • the control component 16 is mounted on a sub-carrier 18 of the Umreifungskopfs, wherein the sub-carrier
  • the sub-carrier 18 of the control component 16 is pivotable about an axis 23.
  • the elements of the band handling component 17 are without own sub-carrier directly to the main carrier
  • control component 16 is provided essentially for carrying out control and coordination functions of the functions performed with the strapping head.
  • the tape handling component 17 and the components attached to it, on the other hand, are intended for direct action on the strapping band.
  • a belt feed device 20 In the band handling component 17 of the strapping head 5, a belt feed device 20, a belt retraction device 21 and a tensioning device 22 are integrated.
  • a belt feed device 20 In the band handling component 17 of the strapping head 5, a belt feed device 20, a belt retraction device 21 and a tensioning device 22 are integrated.
  • common rollers 1 1, 12; 13 provided.
  • the two rollers 1 1, 12 are driven by the same (only one) motor 14, in the embodiment an electric motor.
  • a drive train to one of the two rollers 11, 12 may be performed.
  • the roller 1 1 is provided here both as a drive wheel for the tape feed (Bandvorschubsrad) and as a drive wheel for the tape retraction (Bandrückzugsrad).
  • the roller 11 with the same drive motor 14 can be driven in both directions of rotation.
  • the direction of rotation in the counterclockwise direction is the tape feed direction
  • the direction of rotation in the clockwise direction is the tape retraction direction.
  • the motor drive movement is transmitted to both wheels or rollers 1 1, 12 of the common motor 14 by means of a transmission device.
  • the transmission device 14a comprises a toothed belt transmission which transmits the drive movement from the motor shaft to a further shaft running parallel to the motor shaft.
  • two gears are arranged, each belonging to a further of two partial transmissions of the transmission device. From one of these two partial transmissions of the transmission device, the motor drive movement is transmitted to the roller or the wheel 1 1 and from the other partial transmission to the tensioning wheel 12.
  • both the tensioning wheel 12 and the wheel 11 in different directions of rotation.
  • the roller 1 1 is arranged above the roller 12.
  • the roller 12 is part of the clamping device 22 and has the function of the tensioning wheel. It has a significantly larger diameter than the roller 11.
  • the tensioning wheel 12 is due to the rigid connection with the motor 14 and the drive movements performed by the motor in both directions of rotation, also driven in both directions of rotation.
  • the tensioning wheel but only the drive movement is used in the clamping direction, ie based on the illustration of Fig. 6, the direction of rotation in the clockwise direction.
  • a Relaxation of located in Umreifungskopf and no longer belonging to the band loop band section take place.
  • the drive movements both for the clamping movement and for the relaxation movement originate from the same drive motor as for the roller 1 1.
  • a switchable Coupling provided with the drive movement can be directed either to the roller 1 1 or the roller 12.
  • the tensioning wheel can in turn be driven in both directions of rotation, it can also be provided that the tensioning wheel can also be driven only in the direction of rotation provided for the tensioning operation.
  • the roller 13 is adjacent to both the roller 1 1 and the tensioning wheel 12.
  • the roller 13 is rotationally driven and articulated pivotally by means of a pivoting device.
  • the pivoting device is operatively connected to a drive, through which the roller can perform (motorized) driven pivoting movements.
  • the pivoting movement acting as a counter-roller 13 can be brought either in abutment against the roller 11 or in abutment against the tensioning wheel 12, wherein in the respective end position of the pivotable roller 13 each of the strapping between one of the rollers 1 1, 12 and Roller 13 is located.
  • the counter-roller 13 Depending on which of the rollers 1 1, 12, the counter-roller 13 is applied, the counter-roller 13 then presses the tape to the corresponding roller 11, 12, so that the corresponding roller 11, 12 their rotation as possible without slippage as feed, retraction or Can transmit tensioning and, where appropriate, as a relaxation movement on the strapping.
  • the counter-roller 13 is thus together with the roller 11 both part of the tape feed as well as part of the tape retracting device. Together with the tensioning wheel 12, the counter-roller 13 is also part of the tensioning device 22.
  • the fourth roller which has hitherto been the case in previously known solutions, can be avoided. In these known solutions, the drive roller and the tensioning wheel are each assigned one of two counter-rollers.
  • the preferred 3-roll solution according to the invention can make a significantly more compact design possible.
  • the rollers 11, 12, 13 are in the strapping head 5 also part of a band guide channel 28, through which the course and the forward and sudzugsweg of the band is predetermined.
  • the belt guide channel 28 is again part of the belt guide 6.
  • the strapping head 5 has a first interface 29, at which the strapping head 5 adjoins the supply roll side of the tape guide.
  • the here formed one end of the band guide channel 28 is formed as a quick change interface. This has a by means of a pivotable clamping lever 30 to the strapping head clamped channel piece 31, through which the tape is fed into the strapping head.
  • the channel piece 31 terminates immediately before the peripheral surface 1 1 a of the roller 11, so that the strap can be at least approximately tangential to the peripheral surface 1 1a of the roller 11 is supplied.
  • the roller 13 is in its pivoted to the roller 11 end position, the tape between the rollers 11, 13 is passed, wherein the roller 13 presses the tape against the roller 1 1.
  • the band passes in its further course to the tensioning wheel 12.
  • the counter-roller 13 formed by suitable channel forming means over about 180 ° on the circumference of the tensioning wheel 12 extending arcuate channel portion 28a.
  • the channel section 28a is significantly wider than the strip thickness.
  • the inner boundary of the channel section is formed by the section of the peripheral surface 12a of the tensioning wheel 12 located in the region of the channel section.
  • the outer boundary of the channel section 28a in the radial direction has guide plates as well as an outer channel segment, which is pivotable together with the counter-roller 13, with which the outer channel section can be closed, although the pivotable counter-roller 13 is located in the area of the outer channel section. Without the pivotable channel segment 33 or an equivalent other element, at least one of the two pivot end positions of the counter-roller 13 would possibly result in an open position of the channel section, which could possibly have a negative effect with respect to a secure tape guide.
  • the tensioning wheel 12 is shown in three views. This has a ring 37 which is provided with a recess 38 which is used to connect the Tensioning wheel 12 is provided with a shaft of the drive, in particular with a shaft of a transmission of the drive. In Fig. 2, the tensioning wheel 12 mounted on the shaft is shown. As also shown in Fig. 6, the circular tensioning wheel is provided with a peripheral surface 12a of at least substantially constant width. The tensioning wheel 12 is provided on its circumferential surface 12a with a knurling or toothing 39, by which the engagement conditions of the tensioning wheel 12 are improved on the strapping.
  • any other geometrically determined or indefinite roughening of the circumferential surface 12a of the tensioning wheel could be provided, with which a slippage between the tensioning wheel and the strapping band, which is possible during the tensioning process, can at least be largely prevented.
  • a groove 40 is introduced at a distance from the lateral edges of the tensioning wheel over the entire circumference of the peripheral surface 12a with a comparatively small width, which is formed significantly deeper than wide.
  • the groove 40 are in the embodiment, two rubber-elastic O-rings 43, 44 one above the other, which are arranged in the groove 40 radially one behind the other.
  • one of the O-rings 43 is arranged with a smaller and the other O-rings 44 with a greater distance compared to the axis of rotation of the tensioning wheel 12.
  • the width of the O-rings 43, 44 is provided such that they correspond approximately to the width of the groove 40.
  • the two O-rings 43, 44 are completely within the groove 40. Both O-rings 43, 44 are formed of rubber-elastic material. On the outer of the two O-rings 43, 44 sits a provided as a spacer ring 45, which is designed in the embodiment of a metallic material.
  • the ring 45 is elastically deformable in this embodiment.
  • the ring could be formed substantially rigid or dimensionally stable.
  • the ring 45 could also be formed of one or more materials other than a metallic material, for example of an elastic plastic. In the embodiment, this metal ring 45 is provided with respect to its cross section with a smaller width B than height H.
  • the height of the O-ring is adjusted in relation to the groove depth and the height of the O-rings such that the ring with a Height Hi protrudes from the groove 40.
  • the ring 45 is thus in its unloaded state shown in Fig. 9 on the peripheral surface 12 a of the clamping ring 12 via, in particular over its entire circumference or over the entire circumference of the clamping ring 12th
  • the strapping is pushed at the beginning of the strapping with preferably high speed of the strapping head 5 with its free end of the tape through the tape guide 6.
  • the counter-roller 13 is in abutment against one side of the tape.
  • the tape is pressed by the counter-roller with its other side against the motor-driven roller 1 1.
  • the rotational drive movement of the roller 1 1 in the feed direction is thereby transmitted to the strapping, which causes its Vo rsch u b g u n g in the feed direction.
  • the tape comes behind the outlet region of the tape from the gap between the roller 11 and counter roller 13 in contact with the tensioning wheel 12, but without exerting on the tensioning wheel 12 a significant pressure.
  • the control component 16 which is provided for this purpose with a basically known motor-driven camshaft control. Now sets the camshaft control of the control component 16, the roller 1 1 in the direction of feed reverse direction of rotation in motion. The further between the roller 1 1 and the counter-roller 13 clamped strapping is thereby in the reverse, ie in the tape retraction direction 48 moves. The circumferential length of the belt loop, the band end is still clamped, is thereby continuously shortened. The tape is thereby torn from the tape guide 6 and created as a result of the respective packaged goods.
  • Fig. 6 the tensioning wheel 12 is shown during the tape retracting operation. As can be seen from this illustration, passes during the tape retraction process the strap in abutment against the tensioning wheel 12. The strapping is in essences over the entire arcuate channel portion 28a on the tensioning wheel 12, similar to the case of the first subsequent clamping operation. Although the tape is withdrawn here, but due to its ability to yield to this movement by moving out of the tape guide as intended, only a comparatively small amount of tape tension is applied to the tape of the tape loop during this phase. As a result of this contact with the tensioning wheel 12 and the protruding over the peripheral surface of the ring 45, the tape is not on the peripheral surface of the tensioning wheel 12 but at the located in the peripheral surface 12a ring 45 at.
  • This contact with the spacer element designed here as a ring 45 in the exemplary embodiment results in that the strip can not be damaged during the strip retraction by the knurling or toothing 39 of the peripheral surface 12a.
  • the tape is applied to the packaged by the tape retraction, is switched by the control of tape retraction to generate a tape tension, so that the voltage applied to the packaged tape should be pulled tight.
  • the counter-roller 13 is pivoted from its contact position against the roller 1 1 in an abutment position against the tensioning wheel 12. The offset in the same direction of rotation tensioning wheel 12 as before the roller 1 1, but rotates at a lower speed but using a larger torque and continues to pull on strapping.
  • the tape now, however, no longer in a manner by which the roller 1 1 could transmit their movement on the tape. Since the strapping band already bears against the packaged goods at this stage, the band is pulled back by the tensioning wheel 12 at most with a length that is short compared with the band retraction phase. During this tensioning phase, above all a greater tension is applied to the band.
  • the ring 45 already at the beginning of the clamping phase is pressed by the pressure of the counter-roller 13 in the direction of the tensioning wheel and the belt located therebetween, the ring 45 in the direction of the groove bottom and thus also in a substantially radial direction in the direction of the axis of rotation of the tensioning wheel 12. This is already the case Beginning of the clamping phase, the tape against the ring 45 and presses this also at least in the area of the counter-roller 13 in the direction of the groove bottom.
  • the ring 45 has thus in the counter roller 13 already at the beginning of the clamping process a smaller distance from the axis of rotation of the tensioning wheel than in its unloaded state, for example during the Bandvorschub- or Bandrückzugsphase.
  • this thereby optionally deforms elastically and can again emerge from the groove along that peripheral portion, where the strapping band does not bear against the tensioning wheel, in part (with respect to its height).
  • the ring 45 can protrude from the peripheral surface to a greater extent than in the unloaded state in which it projects beyond a height H 1 .
  • the counter-roller 13 can advantageously with different pressure forces on the one hand against the roller 1 1 (feed roller or retraction roller) and on the other hand against the Tensioning wheel 12 are pressed (in use of the strapping device each with intermediate strapping). Compared to the possible pressure forces against the roller 1 1 higher pressure forces against the tensioning wheel can be for a high reliability and the ability to apply high band tensions on the strapping of advantage. The following therefore explains how in a preferred embodiment of the invention, despite the pivotal movement of the counter-roller 13 between two end positions in the end position different pressure forces can be realized.
  • the counter-roller 13 is arranged on an eccentric 50, which in turn is arranged on a shaft 51 of a carrier 52.
  • the carrier has at a distance from the shaft 52 a receptacle 53 which is provided for mounting on the bearing 54 of the roller 1 1 (Fig. 5, 6).
  • the receptacle 53 is in this case freely rotatable about its axis of rotation on the bearing 54 of the roller 1 1 and can thus perform pivotal movements about its axis of rotation.
  • lever 57, 58, 59 In the area of the counter-roller 13 and the roller 1 1 is a more pivotally hinged together lever 57, 58, 59 exhibiting parallelogram provided.
  • the parallelogram 56 has a long vertical lever 57, a horizontal lever 58 and a short vertical lever 59.
  • the parallelogram is pivoted on the long vertical lever 57 and on the short vertical lever 59.
  • the levers 57 and 59 have for this purpose pivot bearing points 60, 61. Via a bell curve 62, a rotary movement can be transmitted to the long vertical lever 57, which leads to the pivotal movement of the lever 57 about its pivot bearing point 60.
  • the pivotal movement of the lever 57 takes place in a clockwise direction.
  • the lever 58 thereby pulls the latter also at the articulation point of the short vertical lever in the direction of the lever 57, whereby the vertical lever 59 pivots in the illustration of Fig. 1 1, 12 also clockwise about its pivot bearing point 62.
  • An inclined surface 64 formed on the short vertical lever 59 thereby pushes on a bearing 51 disposed on the shaft 51.
  • the inclined surface thereby performs a clockwise movement (as shown in Fig. 12) and tends to have a horizontal orientation take.
  • the carrier 52 performs a pivoting movement, whereby the counter-roller 13 is pivoted from its end position against the roller 11 in the direction of the tensioning wheel 12.
  • the counter-roller Upon reaching the tensioning wheel, the counter-roller bears against the tensioning wheel and can not perform any further pivoting movement. However, the lever 57 continues to pivot, whereby the bearing 65 of the eccentric 50 is moved counterclockwise in the direction of an L-shaped support 66. After the bearing 65 presses against the L-shaped support 65, stops the movement of the bearing 65 and this is at least approximately with an upper bearing 66, the axis of rotation 67 of the counter-roller 13 and the axis of rotation 68 of the tensioning wheel 12 in a line. A previously the pressure force of the counter-roller 13 generating spring element is thus no longer effective.
  • a provision of the parallelogram can be done by a arranged on the pin 72 of the lever 5 further spring 73.
  • FIGS. 14, 15, 16 and 17 show a further preferred embodiment of a tensioning wheel 112 according to the invention.
  • the tensioning wheel 112 may be longitudinally divided with respect to its width, preferably approximately in the middle, wherein the two parts 112b, 112c of the tensioning wheel 1 12 by means of suitable fasteners, such as screws 1 14, are releasably connected to each other.
  • a circumferential groove 140 is formed in the outer ring 137 of the tensioning wheel 1 12, which is open to the peripheral surface 112a of the tensioning wheel 1 12 and is tapered or reduced in the direction of this.
  • one or more return elements may be arranged.
  • resilient ring sections 143 for example a plurality of rubber-elastic O-ring sections 143, are arranged as the return element.
  • these ring portions are spaced apart uniformly distributed in the groove 140, as in the embodiment with a total of four ring portions 143 of the case.
  • the return elements 143 are located below one or more spacer elements.
  • only a trained as a self-contained ring spacer 145 is provided.
  • An outer diameter of the ring 145 arranged in the groove is dimensioned such that in the unloaded state of the ring 145 it protrudes with its outer peripheral surface over the peripheral surface 12a of the clamping ring 12.
  • the ring 145 With its inner circumferential surface, the ring 145 is in the groove.
  • the return elements are attached to the inner peripheral surface of the circular and substantially dimensionally stable ring 145. In other embodiments, a different number of spacers and a different number of return elements may be provided.
  • the ring 145 can be pressed into the groove 140 in sections during the tensioning process, during which the strapping band exerts a sufficiently high compressive force on the ring 145 located in the strapping area of the strapping band.
  • the compressive force on the portion of the ring 145 currently arranged in the looping area of the band is not sufficiently great to completely push this ring portion into the groove 140.
  • the tape is thereby against the portion of the ring 145 and not against the surface of the tensioning wheel 1 12 at.
  • the ring 145 holds the strapping at a distance from the peripheral surface of the tensioning wheel 1 12.
  • a further embodiment of a tape drive means 1 15 is shown.
  • This also has only three rollers 111, 1 12, 1 13, which are responsible for the application of the Bandvorschub-, Bandrückzugs- and the tape tension movement on the tape by contact with the tape, the two rollers 1 1 1 and 1 12 by means an engine, in particular by means of only a common engine, are drivable.
  • the counter-roller 1 13 is in turn pivotally formed so that they are in a pivot position is provided for pressing the strapping against the roller 1 1 1 and in another pivot position for pressing the strapping against the tension roller 1 12.
  • the purpose of this provided pivot mechanism of the counter-roller 1 13 and the drive can be formed in principle the same manner as in the embodiment of FIGS. 1 to 13.
  • the counter-roller 1 13 is rotatably mounted as in the embodiment of Fig. 5 and 6 on an eccentric 150, so that the counter-roller 1 13 at a pivoting movement of one of the rollers 1 1 1, 112 to each other roller 1 1 1, 112 not one performs arcuate movement. As shown in FIGS.
  • a ventilation device 180 is mounted on the eccentric 150 of the counter-roller 1 13, wherein the ventilation device 180 is supported by a carrier 181 on the frame of the strapping device 101.
  • the bearing point 182 of the ventilation device on the eccentric 150 is itself pivotally mounted on the eccentric and is designed as a C or fork-shaped element 183, thereby forming a receptacle for an end of a piston 184.
  • This piston 184 is slidably disposed in the carrier 181 of the ventilation device 180.
  • the support point is located in the illustration of Fig. 18 and 19 immediately above the roller 1 1 1.
  • the carrier 181 of the ventilation device is in this case also pivotally mounted.
  • the ventilation device 180 is provided with a release element which is intended to perform a controlled movement, with which the counter-roller 113 is acted to ventilate the counter-roller 13 in its pivotal position on the roller 1 1 1 or slightly lift ,
  • the counter-roller 1 13 in its pivotal position in the roller 11 1 can be employed, for example, also by means of the ventilation device.
  • the ventilation element is designed as a solenoid 186, which is arranged and mounted on the ventilation device 180. The solenoid 186 can perform with its piston 184 a linear lifting movement along the longitudinal axis 184 a of its piston 184.
  • one end of the piston 184 is arranged in the recess of the C or fork-shaped element 183 which is open toward the carrier 181.
  • the end of the piston 184 and the recess of the C-shaped element can be designed such that during the ventilation movement, the end of the piston 184 in the C-shaped element can move relative thereto.
  • the extended L jossachsel 84a of the piston 184 extends in this case at least approximately through the pivot point of the C-shaped element 183.
  • a stroke of the piston 184 in the direction of the counter-roller 1 13 thus leads to a rotational movement of the eccentric about its axis of rotation.
  • the rotational movement takes place in the counterclockwise direction, as can be determined by comparing the two FIGS. 18 and 19.
  • the rotational movement of the eccentric 150 in turn causes the axis of rotation of the counter-roller 113 is moved in parallel and results in a gap or an enlarged gap between the roller 1 1 1 and the counter-roller 113.
  • the width of the gap should in this case have a size which is greater than the thickness of the strapping band processed in each case.
  • a solenoid for example, the product GKb-32.06 of the company Isliker Magnete AG, CH -8450 Andelfingen, are used.
  • On the piston 184 may be arranged a mechanical spring element, in particular at least one compression spring 188.
  • This compression spring 188 is compressed during the movement of the counter-roller 113 of the tension roller 1 12 to rest against the roller 1 1 1 and thus stretched resiliently.
  • the electrically actuated magnetic reciprocating piston is switched off in this phase and thus has no effect.
  • the compression spring 188 is at least partially relaxed and the spring force acts in support of the force exerted by the solenoid, with which the piston 184 for the ventilation of the counter-roller 113 is moved by the roller 1 1 1.
  • the solenoid or other return element alone provides a sufficiently high force for the ventilation process.
  • the piston 184 extends in the direction of the C-shaped element 183 and acts with its end on the C or fork-shaped element. Due to its location on the eccentric 150 of the eccentric is rotated during the stroke of the piston. In the exemplary embodiment and in the representation of FIG. 18, the rotational movement of the eccentric takes place by a rotation angle of less than 90 ° in the counterclockwise direction. The rotational movement takes place against the spring force of the pressure spring 190, which is thereby compressed and is also articulated on the eccentric 150. As a result of the rotational movement, the counter-roller 113 is released from the roller 11 1, i. raised and the distance between the two rollers
  • the strapping band shot at high speed through the band channel of the band guide 6 has the tendency between the rollers 1 1 1, in generic strapping devices by the sudden and abrupt belt stop,
  • the belt can move as far as required and freely against the feed direction in the direction of the supply of tape, especially immediately after the stop of the feed, so that the for the Length of the band channel may possibly move back excess and the wave formation causing band share in the band guide channel.
  • the control of the strapping device can then turn off the solenoid again.
  • the solenoid loses its effect, whereby the pressure spring 190, the eccentric 150 against the direction of rotation can move back again and thus brings the counter-roller 1 13 again in abutment position against the tape in which the tape between the roller 11 1 and the counter-roller 1 13 clamped is.
  • the subsequent tape retraction and clamping operation can be carried out in the same manner as in the embodiments of the invention according to FIGS. 1 to 13.

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Abstract

L'invention concerne un dispositif de tension d'un dispositif de cerclage servant à cercler un produit au moyen d'une bande de cerclage, en particulier d'une bande de cerclage en matière plastique, qui est pourvue d'une roue de tension, laquelle est en liaison fonctionnelle ou peut être en liaison fonctionnelle avec un dispositif d'entraînement afin d'amener la roue de tension à se déplacer en rotation autour d'un axe de rotation. La roue de tension est pourvue d'une surface périphérique qui est destinée à s'insérer dans la bande de cerclage. L'invention vise à améliorer ledit dispositif de tension, de manière à éviter autant que possible les inconvénients se présentant du fait de la vitesse relative entre la roue de tension et la bande pendant la phase de retour de la bande. A cet effet, au moins un élément d'écartement mobile, qui peut être disposé dans une première position et dans une deuxième position différente de la première, est présent sur la roue de tension dans la zone de la surface périphérique de la roue de tension. Dans la première position, l'élément d'écartement -rapporté à une direction périphérique de la roue de tension- peut être disposé au moins sur certaines parties à une première distance de l'axe de rotation de la roue de tension et, dans la deuxième position, ledit élément peut être disposé au moins sur certaines parties à une deuxième distance de l'axe de rotation de la roue de tension, le premier écart étant différent du deuxième écart et l'élément d'écartement faisant saillie de la surface périphérique de la roue de tension, dans au moins une des deux positions.
PCT/CH2015/000013 2014-02-10 2015-02-10 Dispositif de tension pour dispositif de cerclage WO2015117254A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US15/117,410 US10513358B2 (en) 2014-02-10 2015-02-10 Strapping apparatus
PL15711034T PL3105126T3 (pl) 2014-02-10 2015-02-10 Urządzenie napinające dla urządzenia taśmującego
EP15711034.7A EP3105126B1 (fr) 2014-02-10 2015-02-10 Dispositif de tension pour dispositif de cerclage
US15/117,416 US10220971B2 (en) 2014-02-10 2015-02-10 Tensioning device for a strapping device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CH182/14 2014-02-10
CH00181/14A CH709244A2 (de) 2014-02-10 2014-02-10 Spanneinrichtung einer Umreifungsvorrichtung zur Umreifung von Packgut mit einem Umreifungsband.
CH00182/14A CH709245A2 (de) 2014-02-10 2014-02-10 Umreifungseinrichtung einer Umreifungsvorrichtung zur Umreifung von Packgut mit einem Umreifungsband.
CH181/14 2014-02-10
CH183/14 2014-02-10
CH00183/14A CH709246A2 (de) 2014-02-10 2014-02-10 Umreifungseinrichtung einer Umreifungsvorrichtung zur Umreifung von Packgut mit einem Umreifungsband.

Publications (1)

Publication Number Publication Date
WO2015117254A1 true WO2015117254A1 (fr) 2015-08-13

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PCT/CH2015/000014 WO2015117255A1 (fr) 2014-02-10 2015-02-10 Système de cerclage
PCT/CH2015/000016 WO2015117257A1 (fr) 2014-01-23 2015-02-10 Système de cerclage comprenant un dispositif d'avancement de bande
PCT/CH2015/000015 WO2015117256A1 (fr) 2014-02-10 2015-02-10 Système de cerclage
PCT/CH2015/000013 WO2015117254A1 (fr) 2014-02-10 2015-02-10 Dispositif de tension pour dispositif de cerclage

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PCT/CH2015/000014 WO2015117255A1 (fr) 2014-02-10 2015-02-10 Système de cerclage
PCT/CH2015/000016 WO2015117257A1 (fr) 2014-01-23 2015-02-10 Système de cerclage comprenant un dispositif d'avancement de bande
PCT/CH2015/000015 WO2015117256A1 (fr) 2014-02-10 2015-02-10 Système de cerclage

Country Status (7)

Country Link
US (4) US10220971B2 (fr)
EP (4) EP3105126B1 (fr)
CH (4) CH709220A2 (fr)
ES (1) ES2883950T3 (fr)
PL (4) PL3105128T3 (fr)
TR (1) TR201905484T4 (fr)
WO (4) WO2015117255A1 (fr)

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US20170015450A1 (en) 2017-01-19
US20190050663A2 (en) 2019-02-14
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CH709219A2 (de) 2015-08-14
US20200270007A1 (en) 2020-08-27
PL3105128T3 (pl) 2021-11-22
EP3105127B1 (fr) 2019-06-05
WO2015117255A1 (fr) 2015-08-13
ES2883950T3 (es) 2021-12-09
PL3105127T3 (pl) 2019-11-29
EP3105128A1 (fr) 2016-12-21
EP3105129B1 (fr) 2019-01-16
US10220971B2 (en) 2019-03-05
WO2015117256A1 (fr) 2015-08-13
US11312519B2 (en) 2022-04-26
CH709218A2 (de) 2015-08-14
WO2015117257A1 (fr) 2015-08-13
US20160350613A1 (en) 2016-12-01
TR201905484T4 (tr) 2019-05-21
US10513358B2 (en) 2019-12-24
CH709221A2 (de) 2015-08-14
EP3105129A1 (fr) 2016-12-21
EP3105126B1 (fr) 2018-07-11
US20170015451A1 (en) 2017-01-19
PL3105129T3 (pl) 2019-07-31
CH709220A2 (de) 2015-08-14
EP3105126A1 (fr) 2016-12-21
EP3105127A1 (fr) 2016-12-21
US10689140B2 (en) 2020-06-23

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